Cannondale HollowGram KNOT Stem -17 Degree 80mm BlackThe Cannondale Hollowgram KNOT -17 Degree Stem. Made with a high grade aluminum that is not only strong and lightweight, but it also grips onto handlebars tight. Compatible with SystemSix road bikes. Available in 80mm, 90mm, 100mm, 110mm and 120mm884603798805